Electrical theory Quiz
easy
15 Questions
Question 1 of 15
What is the unit of electric current?
Electric current is measured in Amperes, representing the flow of charge.
Question 2 of 15
What is the unit of electrical resistance?
Resistance is measured in Ohms, opposing the flow of current.
Question 3 of 15
What is Ohm's Law?
Ohm's Law states Voltage (V) equals Current (I) multiplied by Resistance (R).
Question 4 of 15
What is the unit of electrical voltage?
Voltage (potential difference) is measured in Volts.
Question 5 of 15
What is the unit of electrical power?
Electrical power is measured in Watts.
Question 6 of 15
What is the relationship between power, voltage, and current?
Power (P) is equal to Voltage (V) multiplied by Current (I).
Question 7 of 15
In a series circuit, what remains constant?
Current is constant in all parts of a series circuit.
Question 8 of 15
In a parallel circuit, what remains constant?
Voltage is constant across all branches of a parallel circuit.
Question 9 of 15
What is the total resistance of resistors in series?
Total resistance is the sum of all resistor values in a series circuit.
Question 10 of 15
What is the total resistance of resistors in parallel?
The formula to calculate the equivalent resistance.
Question 11 of 15
What is a short circuit?
A short circuit offers very little resistance, allowing excessive current flow.
Question 12 of 15
What is an open circuit?
An open circuit has a break, preventing current flow.
Question 13 of 15
What is the purpose of a fuse in an electrical circuit?
Fuses protect circuits from overcurrents by breaking the circuit.
Question 14 of 15
What is the difference between AC and DC?
AC (alternating current) periodically reverses direction, while DC (direct current) flows consistently in one direction.
Question 15 of 15
Which of the following is a good conductor of electricity?
Copper offers low resistance and readily conducts electricity.
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